The heat transfer takes place according to
In case of solids, the heat transfer takes place according to radiation.
A perfect black body is one which
The by-pass factor for a cooling coil
The subcooling in a refrigeration cycle
An electrolux refrigerator is called a __________ absorption system.
A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
Degree of saturation or percentage humidity is
The difference between dry bulb temperature and wet bulb temperature, is called
The heat transfer by radiation __________ a medium.
The relative humidity decreases as air gets wet.
The coefficient of performance of Heat Pump is always __________ one.
Defrosting of a refrigerator may be done by stopping the compressor for a short period.
During sensible cooling of air __________ decreases.
Thermal conductivity of water __________ with rise in temperature.
The temperature of ammonia after compression in a vapour compression system is
During sensible cooling of air __________ decreases.
The wet bulb temperature lines, on the psychrometric chart, are curved lines.
In aqua-ammonia and Lithium-bromide water absorption refrigeration systems, the refrigerants are respectively
According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour)
Thermal diffusivity is a
As relative humidity decreases, the dew point temperature will be __________ wet bulb temperature.
Thermal diffusivity is a
In a psychrometric process, the sensible heat added iskJ/s and the latent heat added iskJ/s. The sensible heat factor for the process will be
In a psychrometric process, the sensible heat added iskJ/s and the latent heat added iskJ/s. The sensible heat factor for the process will be
The condition of refrigerant after leaving the compressor and before entering the condenser is superheated vapour.
The process of heat transfer from a hot body to a cold body, in a straight line, without affecting the intervening medium, is called radiation.
The amount of radiation mainly depends upon the
The relative humidity is defined as
The relative humidity is defined as